Breaking Enigma Codes [2]

75th Anniversary of Breaking Enigma Codes

Subject: no
Face value: 2 pln
Alloy: (CuAl5Zn5Sn1) NG
Diameter: 27 mm
Weight: 8.15 g
Finish: standard
Mintage: 900000 pcs
On the edge: an inscription, NBP, repeated eight times, every second one inverted by 180 degrees, separated by stars
Additional: no
Date of issue: 2007-03-21
Issue price: 2 pln
A stylised rotor wheel of the Enigma cipher machine. At the circumference, an inscription, each letter in a circle, REJEWSKI RÓŻYCKI ZYGALSKI. In the rim, an, an inscription, 75. ROCZNICA ZŁAMANIA SZYFRU ENIGMY (75th anniversary of breaking Enigma codes).

Designer: Ewa Tyc-Karpińska
An image of the Eagle established as the State Emblem of the Republic of Poland. At the sides of the Eagle, the notation of the year of issue, 20-07. Below the Eagle an inscription, ZŁ 2 ZŁ, an inscription in the rim, RZECZPOSPOLITA POLSKA, preceded and followed by six pearls. The Mint's mark under the Eagle's left leg, m/w.

Designer: Ewa Tyc-Karpińska

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3.50
3.90
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4.00
www.numizmatyczny.com 4.90
4.99
5.00
5.99
www.e-numizmatyk.pl 6.00
www.numizmatyczny.pl 6.00
6.00
7.50

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Article linked with this coin

75th Anniversary of Breaking Enigma Codes

The history of Polish contribution to World War II is generally known. However, relatively little is known about the Polish role in the "battle for secrets", i.e. in the reconstruction of the "Enigma", a German cipher machine, and in the development of apparatus that allowed the decryption of the code that was changed by the Germans on a daily basis. The structure of the replica was based on rotating cylinders with the letters A-Z on the circumference and on plugs providing an indefinite number of possible solutions. Without this apparatus, any attempts to decrypt the current key based on a small number of the messages would have been vain. Moreover, German land, marine and air forces used different codes.

At first sight, the Enigma encryption machine resembled ...

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